Question

resolva os sistemas lineares​

Answer 1

Explicação passo-a-passo:

3 -1 -2 1

1 2 1 9

2 1 -1 6

D = -6 - 2 - 2 + 8 - 3 - 1

D = -6

1 -1 -2

9 2 1

6 1 -1

Dx = -2 - 6 - 18 + 24 - 1 - 9

x = Dx/D = 2

3 1 -2

1 9 1

2 6 -1

Dy = -27 + 2 - 12 + 36 - 18 + 1

y = Dy/D = 3

3 -1 1

1 2 9

2 1 6

Dz = 36 - 18 + 1 - 4 - 27 + 6

z = Dz/D = 1

4 1 -3 5

2 1 1 7

2 3 2 7

D = 8 + 2 - 18 + 6 - 12 - 4

D = -18

5 1 -3

7 1 1

7 3 2

Dx = 10 + 7 - 63 + 21 - 15 - 14

x = Dx/D = 3

4 5 -3

2 7 1

2 7 2

Dy = 56 + 10 - 42 + 42 - 28 - 20

y = Dy/D = -1

4 1 5

2 1 7

2 3 7

Dz = 28 + 14 + 30 - 10 - 84 - 14

z = Dz/D = 2